A recent study of females convicted of crimes showed a disheartening correlation that would confirm accusations of racial injustice in the legal system: The lighter a convict’s skin, the shorter their prison sentence tends to be, and the...

WASHINGTON – A NASA spacecraft is just hours from its long-anticipated encounter with a comet, and skywatchers hope the flyby will shed light on how the comet’s surface has changed since it skimmed by the Sun in 2005. The US space...

NASA spacecraft gears up to rendezvous with comet Hartley 2 Five years after a NASA spacecraft bombarded a comet, it will visit another one Thursday. This time, there won’t be celestial fireworks. Speeding at 27,000 miles per hour, the...

NASA recycles Deep Impact spacecraft for 2nd comet encounter; will study how comets differ A NASA spacecraft is about to have another close look at a comet. Next week, the Deep Impact spacecraft is set to pass within 435 miles of a...